Jason Richardson (L) of the United States and Xie Wenjun of China compete during the men's 110m hurdles during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Richardson won the first place of the event in 13.23 seconds. Xie Wenjun took the third place. (Xinhua/Fan Jun)

Jason Richardson (L) of the United States and Xie Wenjun of China compete during the men's 110m hurdles during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Richardson won the first place of the event in 13.23 seconds. Xie Wenjun took the third place. (Xinhua/Li Jundong)

Jason Richardson (L) of the United States, Xie Wenjun (C) of China and Ryan Wilson of the United States compete during the men's 110m hurdles during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Richardson won the first place of the event in 13.23 seconds. Wilson took the second place. Xie Wenjun took the third place. (Xinhua/Li Ming)

Kenya's Asbel Kiprop (3rd ,R) competes in the men's 1500 meters race during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Asbel Kiprop won the first place of the event in 3 minutes and 32.39 seconds.(Xinhua/Li Jundong)

Jason Richardson of the United States waves to the audience after winning the men's 110m hurdles during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Richardson won the first place of the event in 13.23 seconds.(Xinhua/Li Jundong)

Kenya's Asbel Kiprop (L) sprints to the finish line in the men's 1500 meters race during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Asbel Kiprop won the first place of the event in 3 minutes and 32.39 seconds.(Xinhua/Li Jundong)

Kenya's Conseslus Kipruto celebrates after winning the men's 3000 meters steeplechase during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Conseslus Kipruto won the first place of the event in 8 minutes and 1.16 seconds.(Xinhua/Li Jundong)

Kenya's Conseslus Kipruto celebrates after winning the men's 3000 meters steeplechase during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Conseslus Kipruto won the first place of the event in 8 minutes and 1.16 seconds.(Xinhua/Li Jundong)

Tero Pitkamaki of Finland poses for photos after winning the men's Javelin Throw during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Pitkamaki won the first place of the event in 87.60 meters.(Xinhua/Li Ming)

Kenya's Conseslus Kipruto waves to the audience in the men's 3000 meters steeplechase during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Conseslus Kipruto won the first place of the event in 8 minutes and 1.16 seconds.(Xinhua/Li Jundong)

Tero Pitkamaki of Finland competes in the men's Javelin Throw during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Pitkamaki won the first place of the event in 87.60 meters.(Xinhua/Li Ming)

Russia's Yelena Isinbayeva reacts after winning the women's pole vault at the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Isinbayeva won the first place of the event with 4.70 meters. (Xinhua/Li Ming)

Russia's Yelena Isinbayeva competes during the women's pole vault at the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Isinbayeva won the first place of the event with 4.70 meters. (Xinhua/Li Ming)

Czech Republic's Zuzana Hejnova (C) crosses the finish line in the women's 400 meters hurdles during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Hejnova won the first place of the event in 59.79 seconds. (Xinhua/Li Jundong)

Grenada's Kirani James reacts after winning the men's 400 meters race during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Kirani James won the first place of the event in 44.02 seconds.(Xinhua/Li Jundong)

Grenada's Kirani James competes in the men's 400 meters race during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Kirani James won the first place of the event in 44.02 seconds.(Xinhua/Li Jundong)

Jamaica's Shelly-Ann Fraser-Pryce poses for photos after winning the women's 100 meters race during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Shelly-Ann Fraser-Pryce won the first place of the event in 10.93 seconds.(Xinhua/Li Ming)

Qatar's Mutaz Essa Barshim competes in the men's high jump during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Barshim won the first place of the event in 2.33 meters.(Xinhua/Li Ming)

Poland's Piotr Malachowski celebrates after winning the men's discus throw during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Malachowski won the first place of the event with 67.34 meters.(Xinhua/Li Ming)

Poland's Piotr Malachowski competes in the men's discus throw during the IAAF Diamond League Athletics meet in Shanghai, East China, May 18, 2013. Malachowski won the first place of the event with 67.34 meters.(Xinhua/Li Ming)